PPT-Air Masses, Fronts and Weather Systems

Movements of Air Masses and Fronts are vital to our understanding and prediction of Weather Systems Weather Forecasting requires that we understand Cyclones L Lows and Anticyclones . and fronts. Review of last lecture. Tropical cyclone structure: 3 major components, rotation direction of inflow and outflow, location of maximum wind and rainfall, 3 feedbacks. Tropical cyclone destruction: 4 reasons? Which side has the most intense destruction? . Dr. . Hooda. . What is an air mass?. A large body of air having nearly uniform conditions of temperature and humidity at any given altitude.. Warm air. forms over . tropical. regions near the equator. . Great Flood of 1937. 70% of Louisville was submerged. 3.3 billion in damages. Crest - 85.4 ft. (Flood Stage – 55 ft.). 15 inches of rain in 12 days. Chapter 1: Monitoring the Weather (Basics). One of the Deepest Extratropical Cyclones Ever Recorded. Front: a boundary between 2 air masses. Warm air and cold air do not mix well.. Changes in weather occur along fronts.. 4 Types of fronts:. Cold Front. Warm front. Stationary front. Occluded front. 1. Cold Front. the. Weather. Sun = Energy driving weather. Equator = warm; Poles = cold .  . why. ?. Daytime: air over land warmer than over water; reverse at night. .  . why. ?. Convection currents . Forecasting Weather. Now that Meteorologists understand the factors that affect weather they must put all of this together to create . weather maps. and to determine . weather patterns. .. Together weather maps and weather patterns are very helpful in . Predicting the Weather. Importance. Weather changes. Storm / tornado warnings. Everyday necessity. Tools to Predict. Thermometer. Barometer. Anemometer. Rain gauge. Weather vane. Hygrometer. Thermometer . 1. An air mass is a wide-spread section of the troposphere with uniform . temperature . and . humidity . (moisture). 2. The source region is the geographic location the air mass developed over. . If air settles over one location for a long time, it develops the characteristic temperature and moisture of the area.. 70% of Louisville was submerged. 3.3 billion in damages. Crest - 85.4 ft. (Flood Stage – 55 ft.). 15 inches of rain in 12 days. Chapter 1: Monitoring the Weather (Basics). One of the Deepest Extratropical Cyclones Ever Recorded. A large body of air having nearly uniform conditions of temperature and humidity at any given altitude.. Warm air. forms over . tropical. regions near the equator. . . T- Tropical. . Cold air. . The Causes of Weather. Objectives:. Compare and contrast weather and climate. Analyze how imbalances in the heating of the Earth’s surface create weather. Describe how and where air masses form. Meteorology is the study of atmospheric phenomena, from the ancient Greek meteor “high in the air”. . Fronts occur in the boundary zone between polar and tropical air masses.. World War I Aerial Photograph. trenches. trenches. “No man’s land”. Ben Franklin’s Storm. (Nov. 2, 1743). Philadelphia. Weather Maps. Storms. Weather Maps. Weather Stations. Show the following data. in a concise way:. . - cloud cover. . - wind direction. . - wind speed. . - temperature. . - precipitation. . air masses.. . An . Air Mass. is an immense body of air, some 1600+ km (~1000mi) across and 1-3 km (~.6 to 1.9mi) thick, with relatively homogeneous physical properties (density, T. . and moisture) at a given altitude..